﻿<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
    <meta name="description" content="Lens Flare.">
    <meta name="cesium-sandcastle-labels" content="Showcases, Post Processing">
    <title>Cesium Demo</title>
    <script type="text/javascript" src="../Sandcastle-header.js"></script>
    <script type="text/javascript" src="../../../Build/CesiumUnminified/Cesium.js" nomodule></script>
    <script type="module" src="../load-cesium-es6.js"></script>
</head>
<body class="sandcastle-loading" data-sandcastle-bucket="bucket-requirejs.html">
<style>
    @import url(../templates/bucket.css);
</style>
<div id="cesiumContainer" class="fullSize"></div>
<div id="loadingOverlay"><h1>Loading...</h1></div>
<div id="toolbar">
    <table><tbody>
    <tr>
        <td>Lens Flare</td>
        <td><input type="checkbox" data-bind="checked: show"></td>
    </tr>
    <tr>
        <td>Intensity</td>
        <td><input type="range" min="0" max="10" step="0.01" data-bind="value: intensity, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Distortion</td>
        <td><input type="range" min="1" max="20" step="0.01" data-bind="value: distortion, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Dispersion</td>
        <td><input type="range" min="0" max="1" step="0.01" data-bind="value: dispersion, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Halo Width</td>
        <td><input type="range" min="0" max="1" step="0.01" data-bind="value: haloWidth, valueUpdate: 'input'"></td>
    </tr>
    <tr>
        <td>Dirt Amount</td>
        <td><input type="range" min="0" max="1" step="0.01" data-bind="value: dirtAmount, valueUpdate: 'input'"></td>
    </tr>
    </tbody></table>
</div>
<script id="cesium_sandcastle_script">
function startup(Cesium) {
    'use strict';
//Sandcastle_Begin
var viewer = new Cesium.Viewer('cesiumContainer');

var viewModel = {
    show : true,
    intensity : 2.0,
    distortion : 10.0,
    dispersion : 0.4,
    haloWidth : 0.4,
    dirtAmount : 0.4
};

Cesium.knockout.track(viewModel);
var toolbar = document.getElementById('toolbar');
Cesium.knockout.applyBindings(viewModel, toolbar);
for (var name in viewModel) {
    if (viewModel.hasOwnProperty(name)) {
        Cesium.knockout.getObservable(viewModel, name).subscribe(updatePostProcess);
    }
}

var lensFlare = viewer.scene.postProcessStages.add(Cesium.PostProcessStageLibrary.createLensFlareStage());

function updatePostProcess() {
    lensFlare.enabled = Boolean(viewModel.show);
    lensFlare.uniforms.intensity = Number(viewModel.intensity);
    lensFlare.uniforms.distortion = Number(viewModel.distortion);
    lensFlare.uniforms.ghostDispersal = Number(viewModel.dispersion);
    lensFlare.uniforms.haloWidth = Number(viewModel.haloWidth);
    lensFlare.uniforms.dirtAmount = Number(viewModel.dirtAmount);
    lensFlare.uniforms.earthRadius = Cesium.Ellipsoid.WGS84.maximumRadius;
}
updatePostProcess();

var camera = viewer.scene.camera;
camera.position = new Cesium.Cartesian3(40010447.97500168, 56238683.46406788, 20776576.752223067);
camera.direction = new Cesium.Cartesian3(-0.5549701431494752, -0.7801872010801355, -0.2886452346452218);
camera.up = new Cesium.Cartesian3(-0.3016252360948521, -0.13464820558887716, 0.9438707950150912);
camera.right = Cesium.Cartesian3.cross(camera.direction, camera.up, new Cesium.Cartesian3());

viewer.clock.currentTime = new Cesium.JulianDate(2458047, 27399.860215000022);
//Sandcastle_End
Sandcastle.finishedLoading();
}
if (typeof Cesium !== 'undefined') {
    window.startupCalled = true;
    startup(Cesium);
}
</script>
</body>
</html>
